PHILADELPHIA (CBS) — Authorities are investigating the cause of a deadly fire in Northeast Philadelphia Friday afternoon. One man was killed and three firefighters suffered minor injuries.

The harrowing call for a house fire with an entrapment came just after 4 p.m. Dozens of firefighters battled the flames and smoke in the home on the 3200 block of Birch Road in the northeast, but the conditions inside were “very challenging,” Philadelphia Fire Department commissioner Adam Thiel said.

Credit: CBS3

A possible hoarding situation coupled with the blaze meant firefighters had to shift their method of attack.

“We always try to fight the fire from the inside out. The reality is, depending on the degree of damage, depending on the structure, we always have to pull people out,” Thiel said.